The STIHL EHC 700 is a robust 4-stroke internal combustion engine designed for various applications, likely powering agricultural or construction machinery. Its primary function is to provide reliable power, and it is built with user safety and ease of maintenance in mind, as indicated by the comprehensive multilingual instruction manual.
Function Description:
The EHC 700 is a 4-stroke internal combustion engine, meaning it operates on a four-stroke cycle for efficient fuel consumption and reduced emissions. It is designed to run on commercially available unleaded gasoline, with a minimum octane rating of 86 and a maximum ethanol content of 10% (E10). STIHL recommends using STIHL MotoPlus fuel for optimal performance, as it is nearly free of benzene, sulfur, and harmful aromatics. The engine is air-cooled, and its design emphasizes durability and ease of operation.
Important Technical Specifications:
- Engine Type: 4-stroke internal combustion engine.
- Fuel Type: Unleaded gasoline (minimum 86 octane, max 10% ethanol). STIHL MotoPlus recommended.
- Fuel Tank Capacity: 3.6 liters.
- Engine Oil Type: Commercially available 4-stroke engine oils (SF, SG, SH, SJ, or higher). STIHL recommends SAE 30 or SAE 10W-30, chosen based on ambient temperature.
- Engine Oil Capacity: 0.6 liters.
- Spark Plug Type: F7RTC.
- Spark Plug Electrode Gap: 0.7-0.8 mm.
- CO2 Emissions: Measured according to EU type approval procedures, available on www.stihl.com/co2.
Usage Features:
The EHC 700 features several components that facilitate its operation:
- Recoil Starter Rope Handle (1): Used to manually start the engine. The manual warns of kickback, which can cause hand and arm injuries.
- Fuel Tank (4) and Tank Cap (3): For storing and accessing fuel. The tank has a maximum fill line (2) to allow for fuel expansion.
- Fuel Cock (9): A lever-operated valve located under the oil bath air filter housing, which opens ("ON") or closes ("OFF") the fuel flow to the engine.
- Choke Lever (8): Used to activate the choke for starting a cold engine. The manual emphasizes pushing the choke lever back to its initial position once the engine is running.
- Oil Dipstick (7): For checking the engine oil level. The oil level should be checked without screwing the dipstick in.
- Oil Drain Plug (6): For draining used engine oil.
- Oil Bath Air Filter (5): This filter requires regular filling with engine oil (60 ml capacity) to the marked level (6) and cleaning.
Maintenance Features:
The manual outlines a detailed maintenance schedule to ensure safe, economical, and trouble-free operation:
- Before Each Use:
- Check engine oil level (6.1).
- Check oil bath air filter (7.2).
- After the First 20 Operating Hours or 1 Month:
- Every 50 Operating Hours or Every 3 Months:
- Clean oil bath air filter (7.2).
- Every 100 Operating Hours or Every 6 Months:
- Change engine oil (7.4).
- Check spark plug (7.3).
- Every 300 Operating Hours or Every 12 Months:
- Have the machine inspected by a STIHL specialist dealer.
Key maintenance procedures include:
- Engine Oil Check and Refill (6.1): The engine is delivered without oil and must be filled before first use. Overfilling or underfilling can damage the engine.
- Fuel Refilling (6.2): Use fresh, clean unleaded gasoline. Avoid contaminated or old fuel.
- Oil Bath Air Filter Filling, Checking, and Cleaning (6.3, 7.2): The filter insert (4) should be immersed in fresh engine oil before installation. The housing (5) must be filled to the mark (6). Regular cleaning involves tapping out dirt or washing with soapy water, and draining contaminated oil.
- Spark Plug Check (7.3): Inspect the insulator (2) for damage and cracks, and the electrode (3) for deposits or excessive wear. Replace suspicious spark plugs. Measure and adjust the electrode gap (A) to 0.7-0.8 mm.
- Engine Oil Change (7.4): Drain the oil when the engine is warm for complete drainage. Ensure a suitable oil collection container is used.
Safety warnings are prominently displayed throughout the manual, including warnings about hot surfaces, the importance of reading the manual before use, and the need to disconnect the spark plug before any maintenance to prevent accidental ignition. The manual also emphasizes that only described maintenance tasks should be performed by the user; all other work should be carried out by a STIHL specialist dealer.
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